A name nothing covers raised `KeyError` in four places and
`AmbiguousDatabaseError` in a fifth, so a caller had to catch both and neither
name said what happened. `UnknownDatabaseError` is all of them, exported from
`haiku.rag.store` beside the other errors.
It subclasses `KeyError`, since selecting by name is a lookup, and prints its
message plainly rather than quoted as a missing key. Both CLIs turn it into the
same clean exit they already gave the others.
`_rich_print_search_result` asked how many databases were configured, so
`--db-name alpha` labelled every line with the database the caller had just
named. Citations already ask the client what it covers, which is the same
question the scope answers.
`--database` and `--db` read as one word abbreviated but take different
things, a configured name against a filesystem path, and they sit in
different positions: `haiku-rag --db /path info` fails with `No such option`.
The CLI already says "database" to the user everywhere it prints one, so the
name it selects by should say the same. Unreleased, so no deprecation.
Also: without a reranker, raise `search.limit` with the number of databases
searched, since each contributes its best matches to a list truncated back
to the limit.
Closes#582. `lancedb.databases` entries already classify a location by
whether it carries a scheme; `lancedb.uri` was taken as a URI whatever it
said, so a local path was opened as object storage and a mistyped one
became a new empty database instead of failing. Both settings now place a
database the same way, and `--db PATH` overrides either.
The CLI decides only what it knows — that --db and --database are the same
thing said twice, and whether a command reads more than one — and hands the
resolved scope down. Nothing rewrites the configuration, so a named database
keeps the name results and citations carry, and a remote one opens the URI
it was configured with rather than the local path standing in for it.
HaikuRAGApp, ChatApp and InspectorApp take that scope and nothing else.
Selection reaches the client through a private constructor, so the public
signature still takes a path or names.
Chat answers with the same capabilities `ask` does, so it federates as
naturally as `ask` and `analyze` — but it went through the one-database
guard and refused a configured set outright, which left no way to chat
across several databases.
The guard was the visible half. `run_chat` also defaulted `db_path` to the
single default path whenever it was None, so lifting the refusal alone
would still have opened one database. It now leaves the path unresolved
when `lancedb.databases` names the set, and the client resolves it.
Listing and counting documents fan out over the set, which is what the
document filter reads, and visual grounding resolves the database holding
the cited chunk through the citation's source: chunks, pages and bounding
boxes all come from that one database. A limit on a listing means that
many documents in total, not that many per database.
The info modal reports every database it covers, each under its
configured name and without its location, since names are the only
identity that leaves the configuration. `database_lines` is what one
database reports about itself, shared by both paths, and it reports a
failure as a line so one unreachable database does not cost the report on
the others.
`inspect` stays a one-database command. It browses one database's
documents and chunks, so a set has nothing to show it.
The CLI reports this error, and importing it from the settings repository
pulled lancedb onto the CLI's import path. Deferring the import into cli()
bought nothing, since cli() runs on every invocation: it cost about 1.9
seconds on a cold start, `--help` included.
It now sits beside the other store exceptions, in a module that imports
nothing, and every importer points there.
A database whose stored embedder disagrees with the configuration raised
ConfigMismatchError through Typer, so the operator got a traceback wrapped
around the one message that says what to run, while every sibling failure
exits with its message. It joins the errors the CLI reports.
Imported inside cli() rather than at module scope: the settings module
pulls in lancedb, and importing the CLI must not pay for it.
Chunk 2 gave search a configured set to fan out over. ask and analyze
covered one database still: the RAG capability had no way to be told which
databases a question spanned, and the analysis sandbox mounted one
document tree.
The selection travels as sources on EvidenceState, beside the filter it
scopes with, so both capabilities read it the same way. clients_covering
is the one rule that turns a selection into clients, used by search, the
sandbox mount and the cite fallback, so a question scoped to some
databases cannot search, mount or cite another. Citations carry the
database they came from, and format_for_agent names it, so the model can
attribute evidence while it answers rather than only afterwards.
The sandbox keeps one flat /documents/{id}/ namespace and resolves each id
to the client holding it, which rests on ids being UUID4. A database
copied from another breaks that, so an id held twice is refused rather
than resolved to whichever arrived last.
On the CLI, search, ask and analyze cover the configured set and label
each result with its database. Every other command works on one, named
with --database NAME (a name reaches a database behind a URI, which --db
cannot) or --db PATH, and refuses a set it cannot choose from instead of
silently reading the default database. Cold databases open together, so a
first query costs the slowest open rather than their sum.
cli.py carried 40 pragmas over whole command bodies and app.py a
class-level one over all 412 statements, while tests/test_cli.py already
drove 29 commands through CliRunner. The pragmas hid lines the suite
executed, so the 100% gate understated real coverage and gave new CLI code
no scrutiny.
Both are measured now. 38 CLI tests stub HaikuRAGApp and assert the parsed
arguments reach the right method; 60 app tests stub the client and record
the console, pinning what each command asks for and what it prints. The only
pragma left in either file is cli() under __main__. The omit list is back to
the two Textual TUIs.
Three defects the coverage surfaced:
haiku-rag settings masked only top-level secret-named fields, so nested ones
printed in full — lancedb.api_key, providers.docling_serve.api_key, WebDAV
source passwords. It uses redact_secrets, which walks the dump.
chat guarded the wrong thing: haiku.rag.chat imports without Textual, and
run_chat raises when it imports ChatApp, so the missing extra escaped as an
ImportError. The guard is on the call. inspector raises at module import
instead, so inspect keeps its guard on the import; each has a test that
fails the way the real installation fails.
search --limit/--search-type and history --limit default to None so the
config resolves the default. Now pinned.
CI passed --cov=haiku while pyproject declares source = ["haiku_rag_slim"];
pass --cov and let the config decide. build-docs.yml only ran on push to
main, so a broken docs build merged and failed at deploy: build on pull
requests, with configure-pages, upload-pages-artifact and deploy gated to
push, and a per-ref concurrency group.
